$(window).load(function(){
    var target=".pictureSet";
    var t_img;
    var isLoad = true;





    function isImgLoad(){
        $(".pictureSet_box").css("overflow","hidden");
        $(target).each(function(){


            $(this).find(".pictureSet_box").each(function(){
                var parentWid=$(this).width();
                var parentHei=$(this).height();
                var parentBL=parentWid/parentHei;
                $(this).find("img").each(function(){
                    if(this.height !== 0){
                        var curImgWid=$(this)[0].naturalWidth;
                        var curImgHei=$(this)[0].naturalHeight;
                        var curImgBL=curImgWid/curImgHei;
                        if(parentBL<=curImgBL){

                            var x=-(parentHei*curImgBL-parentWid)/2;

                            var w=parentHei*curImgBL;
                            $(this).css({
                                "height":"100%",
                                "width":w+"px",
                                "position":"relative",
                                "left":x+"px",
                            });
                        }else{

                            var y=-(parentWid/curImgBL-parentHei)/2;

                            var h=parentWid/curImgBL;
                            $(this).css({
                                "width":"100%",
                                "height":h+"px",
                                "position":"relative",
                                "top":y+"px",
                            });
                        }
                    }
                    else{

                        isLoad=false;
                        t_img = setTimeout(function(){
                            isImgLoad();
                        },500);

                    }

                });
            });


        });
        if(isLoad){
            clearTimeout(t_img);
            return false;
        }
    }

    isImgLoad();


});